﻿namespace Md.Api.DDD.Validation;
/// <summary>
/// 通用字段验证类
/// </summary>
public class ValidationHelp
{
    #region 验证身份证
    /// <summary>  
    /// 验证身份证合理性  
    /// </summary>  
    /// <param name="Id"></param>  
    /// <returns></returns>  
    public static bool CheckIDCard(string idNumber)
    {
        if (idNumber.Length == 18)
        {
            bool check = CheckIDCard18(idNumber);
            return check;
        }
        else if (idNumber.Length == 15)
        {
            bool check = CheckIDCard15(idNumber);
            return check;
        }
        else
        {
            return false;
        }
    }

    /// <summary>  
    /// 18位身份证号码验证  
    /// </summary>  
    private static bool CheckIDCard18(string idNumber)
    {
        long n = 0;
        if (long.TryParse(idNumber.Remove(17), out n) == false
            || n < Math.Pow(10, 16) || long.TryParse(idNumber.Replace('x', '0').Replace('X', '0'), out n) == false)
        {
            return false;//数字验证  
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(idNumber.Remove(2)) == -1)
        {
            return false;//省份验证  
        }
        string birth = idNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        {
            return false;//生日验证  
        }
        string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
        string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
        char[] Ai = idNumber.Remove(17).ToCharArray();
        int sum = 0;
        for (int i = 0; i < 17; i++)
        {
            sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
        }
        int y = -1;
        y = sum % 11;
        if (arrVarifyCode[y] != idNumber.Substring(17, 1).ToLower())
        {
            return false;//校验码验证  
        }
        return true;//符合GB11643-1999标准  
    }

    /// <summary>  
    /// 16位身份证号码验证  
    /// </summary>  
    private static bool CheckIDCard15(string idNumber)
    {
        long n = 0;
        if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14))
        {
            return false;//数字验证  
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(idNumber.Remove(2)) == -1)
        {
            return false;//省份验证  
        }
        string birth = idNumber.Substring(6, 6).Insert(4, "-").Insert(2, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        {
            return false;//生日验证  
        }
        return true;
    }
    #endregion

    #region 判断对象是否为空
    /// <summary>  
    /// 判断对象是否为空，为空返回true  
    /// </summary>  
    /// <typeparam name="T">要验证的对象的类型</typeparam>  
    /// <param name="data">要验证的对象</param>          
    public static bool IsNullOrEmpty<T>(T data)
    {
        //如果为null  
        if (data == null)
        {
            return true;
        }

        //如果为""  
        if (data.GetType() == typeof(String))
        {
            if (string.IsNullOrEmpty(data?.ToString()?.Trim()))
            {
                return true;
            }
        }

        //如果为DBNull  
        if (data.GetType() == typeof(DBNull))
        {
            return true;
        }

        //不为空  
        return false;
    }

    /// <summary>  
    /// 判断对象是否为空，为空返回true  
    /// </summary>  
    /// <param name="data">要验证的对象</param>  
    public static bool IsNullOrEmpty(object data)
    {
        //如果为null  
        if (data == null)
        {
            return true;
        }

        //如果为""  
        if (data.GetType() == typeof(String))
        {
            if (string.IsNullOrEmpty(data?.ToString()?.Trim()))
            {
                return true;
            }
        }

        //如果为DBNull  
        if (data.GetType() == typeof(DBNull))
        {
            return true;
        }

        //不为空  
        return false;
    }
    #endregion

    #region 验证IP地址是否合法
    /// <summary>  
    /// 验证IP地址是否合法  
    /// </summary>  
    /// <param name="ip">要验证的IP地址</param>          
    public static bool CheckIP(string ip)
    {
        //如果为空，认为验证不合格  
        if (IsNullOrEmpty(ip))
        {
            return false;
        }

        //清除要验证字符串中的空格  
        ip = ip.Trim();

        //模式字符串  
        string pattern = @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$";

        //验证  
        return RegexHelp.IsMatch(ip, pattern);
    }
    #endregion

    #region 手机号验证
    /// <summary>
    /// 手机号验证是否合法 
    /// </summary>
    /// <param name="phone"></param>
    /// <returns></returns>
    public static bool CheckPhone(string phone)
    {
        //模式字符串  
        string pattern = @"^1[3|4|5|6|7|8|9][0-9]\d{4,8}$";
        //验证  
        return RegexHelp.IsMatch(phone, pattern);
    }
    #endregion

    #region 时间格式验证yyyMddHHmmsss
    /// <summary>
    /// 时间格式验证yyyy-MM-dd HH:mm:ss
    /// </summary>
    /// <param name="datetime"></param>
    /// <returns></returns>
    public static bool CheckDateTimeFormat(string datetime)
    {
        //模式字符串  
        //string pattern = @"^\d{4}-(0\d|1[0-2])-([0-2]\d|3[01])( ([01]\d|2[0-3])\:[0-5]\d\:[0-5]\d)$";
        string pattern = @"^\d{13}$";
        //验证  
        return RegexHelp.IsMatch(datetime, pattern);
    }
    #endregion

    #region 特殊字符
    /// <summary>
    /// 验证不能为特殊符号
    /// </summary>
    /// <param name="strNumber">被验证信息</param>
    /// <returns></returns>
    public static bool CheckWholeString(string strNum)
    {
        //模式字符串  
        string pattern = @"^[0-9a-zA-Z\$]+$";
        //验证  
        return RegexHelp.IsMatch(strNum, pattern);
    }
    #endregion

    #region 字母
    /// <summary>
    /// 验证不能为特殊符号
    /// </summary>
    /// <param name="strNumber">被验证信息</param>
    /// <returns></returns>
    public static bool CheckLetterString(string strNum)
    {
        //模式字符串  
        string pattern = @"^[a-zA-Z\$]+$";
        //验证  
        return RegexHelp.IsMatch(strNum, pattern);
    }
    #endregion

    #region 数字
    /// <summary>
    /// 验证不能为特殊符号
    /// </summary>
    /// <param name="strNumber">被验证信息</param>
    /// <returns></returns>
    public static bool CheckNumberString(string strNum)
    {
        //模式字符串  
        string pattern = @"^[0-9\$]+$";
        //验证  
        return RegexHelp.IsMatch(strNum, pattern);
    }
    #endregion
}

